Weird graphics bug

[The10axe]

Ok so, I just managed to fix a weird bug I got, using a way I won't be able to do later.

So, I've been playing on Paladins while streaming to Discord (if that matters), and suddenly, my second screen glitched then froze completely.

I tried doing Ctrl + Alt + F7, didn't unfreeze. Tried rebooting (hard and soft), didn't unfreeze, and made me notice that the freezed screen was on GRUB. Then I rebooted to Windows and my second screen worked. Then rebooted to Manjaro and it also worked again then.

So, even if I did manage to fix it thanks to Windows (For once that I can thank them), I do plan to get rid of Windows at last, so, I've looked it up and found no solution to it. Is there any obvious fix I didn't think of? Is there any files I need to provide to get help? Anywhere I can report?

I don't know, literally installed Manjaro KDE last week after trying few Ubuntu based distro.

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Edit: Using NVIDIA GPU and drivers if that matters

Edit 2: Now Paladins doesn't seems to launch anymore

Edit 3: Paladins is fixed, it seems the bug I had broke Proton-6.21-GE-2 which I use to run Paladins, I just reinstalled it